Too much of a good thing: sea ice extent may have forced emperor penguins into refugia during the last glacial maximum
Abstract The relationship between population structure and demographic history is critical to understanding microevolution and for predicting the resilience of species to environmental change. Using mitochondrial DNA from extant colonies and radiocarbon‐dated subfossils, we present the first microev...
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Online Access: | http://dx.doi.org/10.1111/gcb.12882 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.12882 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.12882 |
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crwiley:10.1111/gcb.12882 2024-06-02T07:58:33+00:00 Too much of a good thing: sea ice extent may have forced emperor penguins into refugia during the last glacial maximum Younger, Jane L. Clucas, Gemma V. Kooyman, Gerald Wienecke, Barbara Rogers, Alex D. Trathan, Philip N. Hart, Tom Miller, Karen J. Australian Antarctic Science ANZ Trustees Holsworth Wildlife Research Endowment NERC Penguin Lifelines British Antarctic Survey Ecosystems Programme Darwin Initiative 2015 http://dx.doi.org/10.1111/gcb.12882 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.12882 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.12882 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Global Change Biology volume 21, issue 6, page 2215-2226 ISSN 1354-1013 1365-2486 journal-article 2015 crwiley https://doi.org/10.1111/gcb.12882 2024-05-03T10:59:45Z Abstract The relationship between population structure and demographic history is critical to understanding microevolution and for predicting the resilience of species to environmental change. Using mitochondrial DNA from extant colonies and radiocarbon‐dated subfossils, we present the first microevolutionary analysis of emperor penguins ( Aptenodytes forsteri ) and show their population trends throughout the last glacial maximum ( LGM , 19.5–16 kya) and during the subsequent period of warming and sea ice retreat. We found evidence for three mitochondrial clades within emperor penguins, suggesting that they were isolated within three glacial refugia during the LGM . One of these clades has remained largely isolated within the Ross Sea, while the two other clades have intermixed around the coast of Antarctica from Adélie Land to the Weddell Sea. The differentiation of the Ross Sea population has been preserved despite rapid population growth and opportunities for migration. Low effective population sizes during the LGM , followed by a rapid expansion around the beginning of the Holocene, suggest that an optimum set of sea ice conditions exist for emperor penguins, corresponding to available foraging area. Article in Journal/Newspaper Antarc* Antarctica Aptenodytes forsteri Emperor penguins Ross Sea Sea ice Weddell Sea Wiley Online Library Kya ENVELOPE(8.308,8.308,63.772,63.772) Ross Sea Weddell Weddell Sea Global Change Biology 21 6 2215 2226 |
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crwiley |
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English |
description |
Abstract The relationship between population structure and demographic history is critical to understanding microevolution and for predicting the resilience of species to environmental change. Using mitochondrial DNA from extant colonies and radiocarbon‐dated subfossils, we present the first microevolutionary analysis of emperor penguins ( Aptenodytes forsteri ) and show their population trends throughout the last glacial maximum ( LGM , 19.5–16 kya) and during the subsequent period of warming and sea ice retreat. We found evidence for three mitochondrial clades within emperor penguins, suggesting that they were isolated within three glacial refugia during the LGM . One of these clades has remained largely isolated within the Ross Sea, while the two other clades have intermixed around the coast of Antarctica from Adélie Land to the Weddell Sea. The differentiation of the Ross Sea population has been preserved despite rapid population growth and opportunities for migration. Low effective population sizes during the LGM , followed by a rapid expansion around the beginning of the Holocene, suggest that an optimum set of sea ice conditions exist for emperor penguins, corresponding to available foraging area. |
author2 |
Australian Antarctic Science ANZ Trustees Holsworth Wildlife Research Endowment NERC Penguin Lifelines British Antarctic Survey Ecosystems Programme Darwin Initiative |
format |
Article in Journal/Newspaper |
author |
Younger, Jane L. Clucas, Gemma V. Kooyman, Gerald Wienecke, Barbara Rogers, Alex D. Trathan, Philip N. Hart, Tom Miller, Karen J. |
spellingShingle |
Younger, Jane L. Clucas, Gemma V. Kooyman, Gerald Wienecke, Barbara Rogers, Alex D. Trathan, Philip N. Hart, Tom Miller, Karen J. Too much of a good thing: sea ice extent may have forced emperor penguins into refugia during the last glacial maximum |
author_facet |
Younger, Jane L. Clucas, Gemma V. Kooyman, Gerald Wienecke, Barbara Rogers, Alex D. Trathan, Philip N. Hart, Tom Miller, Karen J. |
author_sort |
Younger, Jane L. |
title |
Too much of a good thing: sea ice extent may have forced emperor penguins into refugia during the last glacial maximum |
title_short |
Too much of a good thing: sea ice extent may have forced emperor penguins into refugia during the last glacial maximum |
title_full |
Too much of a good thing: sea ice extent may have forced emperor penguins into refugia during the last glacial maximum |
title_fullStr |
Too much of a good thing: sea ice extent may have forced emperor penguins into refugia during the last glacial maximum |
title_full_unstemmed |
Too much of a good thing: sea ice extent may have forced emperor penguins into refugia during the last glacial maximum |
title_sort |
too much of a good thing: sea ice extent may have forced emperor penguins into refugia during the last glacial maximum |
publisher |
Wiley |
publishDate |
2015 |
url |
http://dx.doi.org/10.1111/gcb.12882 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.12882 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.12882 |
long_lat |
ENVELOPE(8.308,8.308,63.772,63.772) |
geographic |
Kya Ross Sea Weddell Weddell Sea |
geographic_facet |
Kya Ross Sea Weddell Weddell Sea |
genre |
Antarc* Antarctica Aptenodytes forsteri Emperor penguins Ross Sea Sea ice Weddell Sea |
genre_facet |
Antarc* Antarctica Aptenodytes forsteri Emperor penguins Ross Sea Sea ice Weddell Sea |
op_source |
Global Change Biology volume 21, issue 6, page 2215-2226 ISSN 1354-1013 1365-2486 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/gcb.12882 |
container_title |
Global Change Biology |
container_volume |
21 |
container_issue |
6 |
container_start_page |
2215 |
op_container_end_page |
2226 |
_version_ |
1800741933439516672 |